3 ms·
Oh look, a vortex ring. Hermann von Helmholtz, while studying fluid dynamics predicted that vortex rings had to exist. https://www.youtube.com/watch?v=Bcr9-93w
by mar77i 8y ago
Oh look, a vortex ring. Hermann von Helmholtz, while studying fluid dynamics predicted that vortex rings had to exist.
https://www.youtube.com/watch?v=Bcr9-93wXng https://www.youtube.com/watch?v=Bcr9-93wXng